Spent at least 5 hours out driving in the snow yesterday (we got just shy of a foot). Lots of time on hills in 4 low, and side roads in 4 high. Still zero vibrations, noises, or trouble from the driveshafts. I'm comfortable saying that these were a great decision for my Jeep. I look forward to not worrying any more about stock driveshafts exploding while off roading!